Mackinac Island, Michigan. Cairngorm Cottage is a seven-bedroom Victorian in the West Bluff section of this horse-and-buggy island. Built in 1888, the fully furnished, 8,000-square-foot home includes the original woodwork and a turret. The property has a swimming pool, a Jacuzzi, a gazebo, stone-terraced gardens, and a two-bedroom carriage house. $5,850,000.